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authorEric Dumazet <eric.dumazet@gmail.com>2009-06-02 05:19:30 +0000
committerDavid S. Miller <davem@davemloft.net>2009-06-03 02:51:04 -0700
commitadf30907d63893e4208dfe3f5c88ae12bc2f25d5 (patch)
tree0f07542bb95de2ad537540868aba6cf87a86e17d /net/ipv6/exthdrs.c
parent511c3f92ad5b6d9f8f6464be1b4f85f0422be91a (diff)
downloadop-kernel-dev-adf30907d63893e4208dfe3f5c88ae12bc2f25d5.zip
op-kernel-dev-adf30907d63893e4208dfe3f5c88ae12bc2f25d5.tar.gz
net: skb->dst accessors
Define three accessors to get/set dst attached to a skb struct dst_entry *skb_dst(const struct sk_buff *skb) void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst) void skb_dst_drop(struct sk_buff *skb) This one should replace occurrences of : dst_release(skb->dst) skb->dst = NULL; Delete skb->dst field Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/exthdrs.c')
-rw-r--r--net/ipv6/exthdrs.c40
1 files changed, 20 insertions, 20 deletions
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 1c7f400..4aae658 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -277,7 +277,7 @@ static int ipv6_destopt_rcv(struct sk_buff *skb)
if (!pskb_may_pull(skb, skb_transport_offset(skb) + 8) ||
!pskb_may_pull(skb, (skb_transport_offset(skb) +
((skb_transport_header(skb)[1] + 1) << 3)))) {
- IP6_INC_STATS_BH(dev_net(skb->dst->dev), ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(dev_net(skb_dst(skb)->dev), ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INHDRERRORS);
kfree_skb(skb);
return -1;
@@ -288,7 +288,7 @@ static int ipv6_destopt_rcv(struct sk_buff *skb)
dstbuf = opt->dst1;
#endif
- dst = dst_clone(skb->dst);
+ dst = dst_clone(skb_dst(skb));
if (ip6_parse_tlv(tlvprocdestopt_lst, skb)) {
dst_release(dst);
skb->transport_header += (skb_transport_header(skb)[1] + 1) << 3;
@@ -333,7 +333,7 @@ static int ipv6_rthdr_rcv(struct sk_buff *skb)
if (!pskb_may_pull(skb, skb_transport_offset(skb) + 8) ||
!pskb_may_pull(skb, (skb_transport_offset(skb) +
((skb_transport_header(skb)[1] + 1) << 3)))) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INHDRERRORS);
kfree_skb(skb);
return -1;
@@ -343,7 +343,7 @@ static int ipv6_rthdr_rcv(struct sk_buff *skb)
if (ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ||
skb->pkt_type != PACKET_HOST) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INADDRERRORS);
kfree_skb(skb);
return -1;
@@ -358,7 +358,7 @@ looped_back:
* processed by own
*/
if (!addr) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INADDRERRORS);
kfree_skb(skb);
return -1;
@@ -384,7 +384,7 @@ looped_back:
goto unknown_rh;
/* Silently discard invalid RTH type 2 */
if (hdr->hdrlen != 2 || hdr->segments_left != 1) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INHDRERRORS);
kfree_skb(skb);
return -1;
@@ -403,7 +403,7 @@ looped_back:
n = hdr->hdrlen >> 1;
if (hdr->segments_left > n) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INHDRERRORS);
icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
((&hdr->segments_left) -
@@ -417,7 +417,7 @@ looped_back:
if (skb_cloned(skb)) {
/* the copy is a forwarded packet */
if (pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_OUTDISCARDS);
kfree_skb(skb);
return -1;
@@ -440,13 +440,13 @@ looped_back:
if (xfrm6_input_addr(skb, (xfrm_address_t *)addr,
(xfrm_address_t *)&ipv6_hdr(skb)->saddr,
IPPROTO_ROUTING) < 0) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INADDRERRORS);
kfree_skb(skb);
return -1;
}
- if (!ipv6_chk_home_addr(dev_net(skb->dst->dev), addr)) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ if (!ipv6_chk_home_addr(dev_net(skb_dst(skb)->dev), addr)) {
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INADDRERRORS);
kfree_skb(skb);
return -1;
@@ -458,7 +458,7 @@ looped_back:
}
if (ipv6_addr_is_multicast(addr)) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INADDRERRORS);
kfree_skb(skb);
return -1;
@@ -468,17 +468,17 @@ looped_back:
ipv6_addr_copy(addr, &ipv6_hdr(skb)->daddr);
ipv6_addr_copy(&ipv6_hdr(skb)->daddr, &daddr);
- dst_release(xchg(&skb->dst, NULL));
+ skb_dst_drop(skb);
ip6_route_input(skb);
- if (skb->dst->error) {
+ if (skb_dst(skb)->error) {
skb_push(skb, skb->data - skb_network_header(skb));
dst_input(skb);
return -1;
}
- if (skb->dst->dev->flags&IFF_LOOPBACK) {
+ if (skb_dst(skb)->dev->flags&IFF_LOOPBACK) {
if (ipv6_hdr(skb)->hop_limit <= 1) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INHDRERRORS);
icmpv6_send(skb, ICMPV6_TIME_EXCEED, ICMPV6_EXC_HOPLIMIT,
0, skb->dev);
@@ -494,7 +494,7 @@ looped_back:
return -1;
unknown_rh:
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst), IPSTATS_MIB_INHDRERRORS);
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_INHDRERRORS);
icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
(&hdr->type) - skb_network_header(skb));
return -1;
@@ -552,11 +552,11 @@ void ipv6_exthdrs_exit(void)
**********************************/
/*
- * Note: we cannot rely on skb->dst before we assign it in ip6_route_input().
+ * Note: we cannot rely on skb_dst(skb) before we assign it in ip6_route_input().
*/
static inline struct inet6_dev *ipv6_skb_idev(struct sk_buff *skb)
{
- return skb->dst ? ip6_dst_idev(skb->dst) : __in6_dev_get(skb->dev);
+ return skb_dst(skb) ? ip6_dst_idev(skb_dst(skb)) : __in6_dev_get(skb->dev);
}
/* Router Alert as of RFC 2711 */
@@ -581,7 +581,7 @@ static int ipv6_hop_jumbo(struct sk_buff *skb, int optoff)
{
const unsigned char *nh = skb_network_header(skb);
u32 pkt_len;
- struct net *net = dev_net(skb->dst->dev);
+ struct net *net = dev_net(skb_dst(skb)->dev);
if (nh[optoff + 1] != 4 || (optoff & 3) != 2) {
LIMIT_NETDEBUG(KERN_DEBUG "ipv6_hop_jumbo: wrong jumbo opt length/alignment %d\n",
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